Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 45mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke45 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-40S
The AirTAC SAIJ100X45-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the 45 mm nominal stroke by up to 40 mm. This yields a highly versatile 5 to 45 mm usable travel window, perfect for dialing in exact end-positions during machine commissioning without swapping hardware. It delivers 3927 N of push force at 0.5 MPa.
This specific SKU features a SUS304 stainless steel rod for superior corrosion resistance and ships with a magnetic piston (-S) for electronic or reed sensing. The rear adjuster acts purely as a mechanical stop to set deceleration and travel endpoints; it does not lock or hold the load without live air pressure. For position holding, an external pilot-operated check valve or related SAIL lock cylinder is required.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 45 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×45 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-40S Is Used
Short-Stroke Clamping
Dial in precise 5 to 45 mm clamping end-stops on the fly to accommodate varying part tolerances without changing out the actuator.
Machine Commissioning
Fine-tune retract end-positions during setup, using the rear adjuster to perfect the motion sequence before finalizing the design.
Product Changeover
Rapidly adjust the travel window for different product sizes on a single line, leveraging the 40 mm adjustment range to switch profiles quickly.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-40S the Right Cylinder?
Choose this 100 mm bore when 50 mm bore thrust (982 N at 0.5 MPa) is insufficient, giving you a massive 3927 N push force at 0.5 MPa or 7068 N at 0.9 MPa. An adjustable stroke is ideal here because the 5-45 mm travel window allows operators to fine-tune short clamping or positioning moves on the fly, avoiding the need to bolt on external stops. To replace an ISO 15552 cylinder, match the 100 mm bore, 45 mm stroke, 40 mm adjuster, PT G1/2 port, and -S magnet.
Because the stroke is short (45 mm), side-load risks are minimal, but the robust 25 mm rod and M20x1.5 thread handle high axial loads efficiently. Note that SAIJ supports mounting styles Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. The -S piston works seamlessly with AirTAC CMSE reed and DMSE solid-state sensors fitted into the dual-side sensor grooves.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX45-40S FAQ
At 0.5 MPa it provides 3927 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
The rear adjuster is a mechanical stop that lets you trim the nominal 45 mm stroke back by up to 40 mm, creating a 5 to 45 mm usable travel window. It only sets the end position and does not hold the load without live air.
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Standard models usually ship in 3-4 days.
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